Polymer concrete

Polymer concrete

Polymer concrete is part of group of concretes that use polymers to supplement or replace cement as a binder. The types include polymer-impregnated concrete, polymer concrete, and polymer-portland-cement concrete. Polymers in concrete have been overseen by ACI Committee 548 since 1971.

Composition

Polymer concrete is composed of aggregates that include silica, quartz, granite, limestone, and other high quality material. The aggregate must be of good quality, free of dust and other debris, and dry. Failure of these criteria can reduce the bond strength between the polymer binder and the aggregate.

Advantages

Advantages of polymer concrete include:
*Rapid curing at ambient temperatures
*High tensile, flexural, and compressive strengths
*Good adhesion to most surfaces
*Good long-term durability with respect to freeze and thaw cycles
*Low permeability to water and aggressive solutions
*Good chemical resistance
*Good resistance against corrosion
*Lightweight
*May be used in regular wood and steel formwork
*May be vibrated to fill voids in forms
*Allows use of regular form-release agents

Polymer concrete may be used for new construction or repairing of old concrete. The adhesion properties of polymer concrete allow patching for both polymer and cementious concretes. The low permeability of polymer concrete allows it to be used in swimming pools, sewer pipes, drainage channels, and other structures that contain liquids.f

Disadvantages

Some safety issues arise out of the use of polymer concrete. The monomers can be volatile, combustible, and toxic. Initiators, which are used as catalysts, are combustible and harmful to human skin. The promoters and accelerators are also dangerous.

Polymer concretes also cost significantly more than conventional concrete.

pecifications

Following are some specification examples of the features of polymer concrete:

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • polymer concrete — polimerbetonis statusas T sritis chemija apibrėžtis Betonas, kurio rišamoji medžiaga yra sintetinis polimeras. atitikmenys: angl. polymer concrete; resin concrete rus. пластбетон; полимербетон …   Chemijos terminų aiškinamasis žodynas

  • Concrete leveling — is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured, and commonly performed at small businesses and private… …   Wikipedia

  • Concrete — This article is about the construction material. For other uses, see Concrete (disambiguation). Outer view of the Roman Pantheon, still the largest unreinforced solid concrete dome.[1] …   Wikipedia

  • polymer — /pol euh meuhr/, n. Chem. 1. a compound of high molecular weight derived either by the addition of many smaller molecules, as polyethylene, or by the condensation of many smaller molecules with the elimination of water, alcohol, or the like, as… …   Universalium

  • Types of concrete — There are many types of concrete, variations of installation, composition, finish and performance characteristics. A highway paved with concrete …   Wikipedia

  • resin concrete — polimerbetonis statusas T sritis chemija apibrėžtis Betonas, kurio rišamoji medžiaga yra sintetinis polimeras. atitikmenys: angl. polymer concrete; resin concrete rus. пластбетон; полимербетон …   Chemijos terminų aiškinamasis žodynas

  • Decorative concrete — Stamped Concrete in various patterns, highlighted with acid stain) Decorative concrete is the use of concrete as not simply a utilitarian medium for construction but as an aesthetic enhancement to a structure, while still serving its function as… …   Wikipedia

  • Carbon-fiber-reinforced polymer — For fibers of carbon, see carbon (fiber). Tail of an RC helicopter, made of CFRP Carbon fiber reinforced polymer or carbon fiber reinforced plastic (CFRP or CRP or often simply carbon fiber), is a very strong and light fiber reinforced polymer… …   Wikipedia

  • Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …   Wikipedia

  • Dendronized polymer — Dendronized polymers are linear polymers to every repeat unit of which dendrons are attached. Dendrons are regularly branched, tree like fragments and for larger ones the polymer backbone is wrapped to give sausage like, cylindrical molecular… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”